JP3614165B2 - Method for manufacturing coin-type lithium battery - Google Patents

Description

  The present invention relates to a method for manufacturing a coin-type lithium battery using lithium metal as a negative electrode.

  An example structure of a coin-type lithium battery includes a battery case 1 serving as a positive terminal and a negative electrode sealing lid 2 having a negative electrode lithium metal 4 disposed on the inner surface, as shown in FIG. It is fitted and sealed via a gasket 3.

  Reference numeral 5 denotes a positive electrode current collecting paint disposed in the bottom surface of the battery case 1. The battery case 1 contains a positive electrode 6 formed by pressure-molding powder of, for example, manganese dioxide, and a separator 7. Filled.

  In the manufacture of the coin-type lithium battery, the arrangement of the negative electrode lithium (Li) metal 4 on the negative electrode sealing lid 2 is normally prepared by preparing a Li metal plate 10 as shown in a perspective view of FIG. Then, a disc-shaped Li metal body 11 having a required diameter is punched out, and this is placed and pressure-bonded in the negative electrode sealing lid body 2 as shown in a perspective view in FIG.

  However, in the case of such a method, as apparent from FIG. 14, the area of the remaining portion of the Li metal plate 10 after punching out the Li metal body 11 is considerably large, the utilization rate is low, and resource saving is achieved. Hinder cost reduction. Reusing the remaining portion from which the Li metal body 11 has been punched incurs high costs due to problems such as purity.

As a method for coping with this problem, there has been proposed a method in which a Li mass obtained by cutting a columnar body made of an Li-extruded product into an appropriate length is placed in a sealing lid and pressure-bonded (for example, Patent Document 1). ). However, when this method is used, there is a case where Li metal does not necessarily adhere uniformly to the negative electrode sealing lid over a predetermined shape area.
JP-A-3-238756

  By the way, since Li metal is an extremely soft metal, whichever method is adopted, the punching punch used for punching the above-mentioned Li disk-shaped body 11 or the Li disk-shaped body 11 or the above-mentioned Li lump. In the negative electrode sealing lid body 2, Li metal adheres to the punch used for rolling, and it becomes impossible to punch with good cutting, or the pressing punch is pulled away after the negative electrode sealing lid body 2 is pressed or rolled. At times, Li metal is pulled together with the punch to cause a press-bonding failure with the lid 2, or the lid 2 is deformed to cause defective products.

  In view of the above points, the present invention improves the peelability between the punch and the Li metal body when rolling or forming the Li metal body in the negative electrode sealing lid or punching the Li metal body from the Li metal member, A coin-type lithium battery can be manufactured stably and with a high yield.

The present invention finally obtains as a release agent on at least one surface of a punch or a lithium metal plate when a method of disposing a lithium punched body punched from a lithium metal plate by a punching punch in a negative electrode sealing lid. Punching is performed with a punch in a state where a nonaqueous solvent used in a coin-type lithium battery or an electrolyte solution containing an electrolyte is applied to the nonaqueous solvent.

The present invention cuts a lithium metal body into a predetermined size using a stretched thin wire or a sandwiching body, and is placed so that the cut surface of the lithium metal body is in contact with the bottom surface of the negative electrode sealing lid body. A non-aqueous solvent or a non-aqueous solvent used in a coin-type lithium battery finally obtained as a mold release agent is provided on at least one of contact surfaces with a punch for rolling or molding a body or a punch of these lithium metal bodies. Rolling or molding is performed with a punch in a state where an electrolytic solution including an electrolyte is applied.

  In the present invention, in the punching from a lithium metal plate, the rolling forming of a lithium metal body by punching, or the like, the peelability can be measured and the adhesion can be improved by applying an electrolytic solution or a non-aqueous solvent thereof.

According to the method for manufacturing a coin-type lithium battery according to the present invention, in punching of a lithium metal plate, rolling or molding of a lithium metal body, electrolysis is performed on the punched or punched lithium metal plate or lithium metal body. By applying a non-aqueous solvent constituting the liquid or the electrolyte, it is possible to act as a mold release agent even when a plastic punch is used. Therefore, the target punching can be performed satisfactorily by peeling off the lithium metal and the punch satisfactorily. Therefore, it is possible to avoid the occurrence of defects due to deformation of the lithium metal or the negative electrode sealing lid.
And since this mold release agent is a composition of the electrolyte solution of the battery finally comprised, there is no inconvenience in characteristics due to the application of this release agent.
Thus, in the present invention, a highly reliable battery can be stably obtained with a high yield.

  An embodiment of a method for manufacturing a coin-type lithium battery according to the present invention will be described. In the method for manufacturing a coin-type lithium battery according to the present embodiment, as shown in FIG. 1, a negative electrode sealing lid body 2 having a negative electrode lithium metal 4 disposed on the inner surface is provided on a battery case 1 serving as a positive terminal. 3 is used to manufacture a coin-type lithium battery that is fitted and sealed via 3. A positive current collecting paint 5 is provided in the bottom surface of the battery case 1, and a positive electrode 6 formed by pressure-molding powder such as manganese dioxide and a separator 7 are accommodated in the battery case 1 and filled with an organic electrolyte. The

  And this Embodiment cuts the lithium metal rod-shaped body 21 in manufacture of this battery, the process of rolling and pressurizing the cut body 22 as the negative electrode lithium metal 4, and arrange | positioning in the negative electrode sealing cover body 2 of a battery case. In the method for manufacturing a coin-type lithium battery having the following structure, a lithium metal rod 21 having a regular square cross section shown in FIG.

In this example, the case where the negative electrode sealing cover plate 2 has an inner diameter D of 18 mm and a height h of 2.5 mm as illustrated in FIG. 6A is illustrated. In this case, the lithium metal rod-shaped body 21 is cut in the longitudinal direction along the plane orthogonal to the axis of the rod-shaped body 21 as shown by chain lines a ₁ , a ₂ , a _3. A regular cubic cut body 22 having a length L ₁ of Ls ≦ L ₁ ≦ 2.5 Ls, for example, L ₁ = 5 mm is cut out.

  The cutting of the cut body 22, that is, the cutting of the lithium metal rod-shaped body 21 is performed with a stretched thin wire 23 as shown in FIG. 4.

  For example, the wire 23 is stretched between the arm portions 27A and 27B of the U-shaped frame facing each other in a state where pressure is applied from both outsides, and then the wire 23 is removed by removing the pressure. Tension is stretched between the arms 27A and 27B with a required tension.

  For example, a tungsten wire having a diameter of 0.15 mm is stretched about 2 mm longer than the width of the rod-like body, that is, the side length Ls.

Then, the frame 27 in which the wire 23 is tension-stretched is sequentially along the plane indicated by chain lines a ₁ , a ₂ , a ₃ ... With respect to the rod-shaped body 21, that is, orthogonal to the axis of the rod-shaped body 21. Press in one direction.

  If it does in this way, the rod-shaped body 21 will be cut | disconnected and the lithium Li metal cutting body 22 shown in FIG. 3 will be cut out.

  If this wire 23 is too thick, there will be a problem of lithium adhesion, but with the direct 0.15 mm, this lithium adhesion was almost avoided during cutting.

  As the wire 23, a wire such as stainless steel or iron can be used in addition to the tungsten wire.

  Further, as a cutting method according to another embodiment, as shown in FIG. 5, a pair of blades 24 and 25 are provided, and a lithium metal rod 21 is sandwiched between them to cut.

  In this case, the double-edged blades 24 and 25 are made of a polymer material such as Delrin (trade name, manufactured by DuPont), to which lithium is difficult to adhere, or the surface thereof is covered with this kind of material.

  The blades 24 and 25 may have a thickness d of 10 mm and a blade inclination θ of 30 °.

  As shown in FIG. 6A, the cut body 22 obtained in this manner is placed on a predetermined position in the cup-shaped negative electrode sealing lid body 2, that is, the center of the lid body 2 and is temporarily crimped by pressure bonding. Then, the first punch 37 is pressed from above.

  The punch 37 has a bowl-shaped, for example, substantially hemispherical concave portion 36, and is pressed from above the cut body 22.

  In this way, as shown in FIG. 6B, a hemispherical molded body 39 corresponding to the shape of the recess 36 is formed on the lid 2 by pressure bonding.

The concave portion 36 has a volume that is about 10% larger than the volume of the cut body 22, for example, a diameter of 16 mm and a volume of 137.5 mm ^3, and avoids uneven protrusion of the molded body 39.

  Thereafter, as shown in FIG. 6C, a flat plate-shaped molded body, that is, a negative electrode is pressed by pressing a flat plate punch 38 having a circular flat plate surface whose diameter corresponds to the outer diameter of the negative electrode lithium metal 4 finally obtained. Lithium metal 4 is formed in close contact with the negative electrode sealing lid 2.

  In this way, the hemispherical molded body 39 shown in FIG. 6B has a convex shape with respect to the hemispherical molded body 39 as shown in FIG. 7A prior to pressing by the punch 38 shown in FIG. 6C. As shown in FIG. 7B, the spherical punch 40 is once crushed to obtain a rolled intermediate body 4S that has been rolled, and thereafter punching by the flat plate punch 38 of FIG. 6C can be performed. At this time, a thin negative electrode lithium metal 4 of 0.2 mm or less could be molded into the bottom surface 2B in the negative electrode sealing lid 2.

  Further, the metal punched body 11 is obtained from the lithium metal plate 10 by the punches 37, 38, 40, etc., and the punching punch 42 as shown in FIG. 10, and this is sealed as described in FIG. Since the punch 42 when mounted on the lid 2 is extremely soft, lithium is stuck to each punch, and in order to avoid adhesion of lithium metal, these punch and lithium metal plate 10 or lithium metal cut body An electrolyte solution of the battery finally obtained, that is, an electrolyte solution containing an electrolyte in a nonaqueous solvent, or a nonaqueous solvent solution thereof is applied to any one of the contact surfaces with each other before punching.

  That is, for example, propylene carbonate, dimethoxyethane or the like as a nonaqueous solvent, or a mixed solution thereof, or a solution obtained by adding lithium perchlorate as an electrolyte to this nonaqueous solvent is applied.

  Further, the lithium metal cut body 22 is cut from the rod-shaped body 21 and then placed in the negative electrode sealing lid body 2, and as shown in FIG. Is placed on the bottom surface 2B of the negative electrode sealing lid 2 with the previously cut surface in contact with the bottom surface 2B, and in this state, for example, cutting with the blades 24 and 25 similar to those described in FIG. 5 is performed. Thus, the cut body 22 can be obtained directly on the lid body 2.

  In addition, the placement of the lithium metal cut body 22 or the lithium metal rod-shaped body 21 on the bottom surface 2B of the negative electrode sealing lid body 2 is caused by alteration of the latest cut surface, that is, an oxide film or the like caused by the cut surface or the previous cutting. Place the non-facing surface facing the bottom surface 2B.

  By doing so, it is possible to obtain an electrical and mechanical contact between the bottom surface 2B and the cut body 22 or the rod-like body 21, and thus a good contact state between the lithium metal 4 and the negative electrode sealing lid body 2, and the oxide film An increase in contact resistance due to the presence of can be avoided.

  And the operation | movement which orient | assigns the cutting surface 22a to the bottom face 2B of the negative electrode sealing cover body 2 in the latest cutting surface especially the cutting body 22 in this way is smooth by using the holding jig 41 shown, for example in FIG. Can be done.

  The holding jig 41 is made of, for example, a so-called air chuck, and the latest cut surface of the lithium metal cut body 22 in which the pair of holding bodies 41a and 41b made of delrin, for example, is cut from the lithium metal rod-like body by supplying and exhausting compressed air. 22a is clamped / removed toward the front.

  For example, as shown in FIG. 8, the holding jig 41 is attached to a rotation shaft 46 along the holding direction in which the holding bodies 41 a and 41 b are close to and away from each other, and turned 90 degrees, for example. It is moved from the cutting position to another position, where the rotating shaft 46 is pushed in a direction perpendicular to the cutting surface 22a and placed on the bottom surface 2B of the negative electrode sealing lid 2 brought to this position. Then, press lightly to crimp the crimped body 22 at a predetermined position on the bottom surface 2B, that is, the center position, and then evacuate the air chuck to separate the holding bodies 41a and 41b from each other to hold the severed body 22. Release from the tool 41.

  In the example of FIG. 9, the rotation shaft 46 is orthogonal to the case of FIG. 8. In FIG. 9, portions corresponding to FIG.

  8 and 9, the holding jig 41 is rotated 90 °, but it can be set to any rotation angle such as 180 °.

  Moreover, the cutting | disconnection of the lithium metal cutting body 22 from the lithium metal rod-shaped body 21, the transfer to this predetermined position, for example, the negative electrode sealing cover body 2, and also the newest cut surface 22a of this cutting body are made into the negative electrode sealing cover. The operation of directing to the bottom surface 2B of the body 2 can be performed continuously.

  FIG. 11 shows an example of the apparatus in this case. In this example, a rotating blade made of metal or plastic that is rotated by a rotating shaft 61 is formed. The rotary blade is provided with a notch 62 having a required width while maintaining a required angular interval on the outer peripheral portion of the disc, and a cutting blade 43 having a cutting ability in the rotation direction is formed in the notch 62. Become.

  Then, for example, the lithium metal rod 21 is inserted in every other notch 62 in the direction along the rotation axis 61, and the rotation of the rotary blade causes the cutting blade 43 and the rod 21 to be perpendicular to the axial direction. Disconnect.

  At this time, the cutting body 22 obtained by cutting the rod-shaped body 21 is brought to another cutting position while being attached to the cutting blade 43 by selecting the width of the notch, the shape of the cutting blade 43, and the like. be able to.

  Then, the negative electrode sealing lid 2 is brought in at another rotational position, and at this position, the pushing means 44 for pressing in the direction along the rotational shaft 61 is provided, whereby the cutting blade 43 is attached. The cut body 22 that has been removed is forcibly peeled off, and is placed and pressure-bonded at a predetermined position on the bottom surface 2 </ b> B of the lid 2.

  The surface of the cut body 22 on the bottom surface 2B at this time is a clean surface that is not oxidized by the latest cut surface 22a.

  12A and 12B show another example, and in this case, a plate-like reciprocating cutting blade is configured.

  In this case, for example, a movable plate 63 made of metal, plastic or the like is provided, and a plurality of, for example, three, cutting blades 43 formed by a circular hole are provided along the moving direction of the movable plate 63, etc. An array is formed at intervals.

  The movable plate 63 is reciprocated on, for example, a straight line x along the plate surface direction (xy plane including x and y directions orthogonal to each other in the figure), for example. .

  Each cutting blade 43 is formed on the inner periphery of a circular hole, and the lithium metal rod 21 inserted along the z direction perpendicular to x and y into the circular hole by the movement of the movable plate 63 It can cut | disconnect by the xy plane orthogonal to the axial direction z.

  On the other hand, the negative electrode sealing lid 2 is placed on both sides of the holding portion 64 of the lithium metal rod 21 facing the moving cutting blade, that is, the reciprocating moving plate 63, and both sides along the x direction. And a holding portion 65 for holding the lithium metal rod 21 so that the distance between the central axes of the lithium metal rods 21 is equal to the pitch of the cutting blades 43.

  On the other hand, on the arrangement part of each negative electrode sealing lid body 2, an extruding means 44 of a lithium metal cut body is provided on the opposite side across the movable plate-like body 63, and upward in FIG. 12B.

  With this configuration, the first operation is performed. That is, first, the lithium metal rod 21 is passed through the center cutting blade 43 so as to protrude by a predetermined amount, and in this state, the movable plate 63 is moved in the + x direction (rightward in the figure).

  At this time, the metal rod 21 is cut along the xy plane by the center cutting blade 43 by this movement, and the cutting body 22 is generated. At this time, the inner diameter of the circular hole cutting blade 43, the shape of the blade, and the like are changed. By selecting, the cut lithium metal cutting body 22 is moved in the + x direction while being attached to the center cutting cutter 43 together with the central rotary cutting blade 43. The amount of movement at this time is made equal to the pitch of the adjacent circular hole cutting blades 43.

  If it does in this way, the cutting body 22 will be brought to the upper position of the right-side negative electrode sealing cover body 2 in the figure.

  At this time, the pushing means 44 is pushed down, and the cutting body 22 in the central cutting blade 43 moved to the right side is pushed out of the cutting blade 43 and pressed onto the center of the bottom surface 2B of the lid 2 here. Crimp and crimp.

  The surface of the cut body 22 on the bottom surface 2B at this time is a clean surface that is not oxidized by the latest cut surface 22a.

  When the central cutting blade 43 is moved in the right direction, the left circular hole cutting blade 43 shown in FIG. 12 is located in the center although not shown. Therefore, at this time, the rod-shaped body 21 whose drive has been cut is pushed upward in the figure in the z-axis direction by a predetermined amount, and a predetermined amount of head is projected into the circular hole cutting blade 43 brought to the center position. It penetrates in the state that was made to.

  In this state, the movable plate-like body is moved in the −x direction (left direction in FIG. 12) to return to the original position.

  At this time, the lithium metal rod 21 is cut by the left cutting blade 43 brought to the center, and the cut body 22 is brought to the leftward movement position. That is, the cut body 22 is brought on the negative electrode sealing lid body 2 located on the left side. Accordingly, the cut body 22 brought to the left side by the pushing means 44 on the left side is pushed out from the left cutting blade 43 and pressed into the negative electrode sealing lid body 2 as described above.

  At this time, the lithium metal rod-shaped body 21 is again projected by a predetermined amount into the central cutting blade 43. On the other hand, the negative electrode sealing lid body 2 on which the cut body 22 is placed is sequentially replaced with the lid body 2 on which the cut body 22 is not placed.

  Next, the moving plate-like body is moved to the left side opposite to the above, and a second operation is performed in which the same cutting operation is performed with the center cutting blade and the right cutting blade.

  In this way, for example, three cutting blades 43 are used for cutting, but one of the cutting blades on both sides, for example, the right cutting blade is omitted, and the moving plate-like body is initially set with two cutting blades 43. For example, the cutting body 22 can be supplied to the negative electrode sealing lids 2 on both sides only by moving rightward from the original position state and returning to the original position, that is, only by the first operation described above.

  Moreover, the cutting blade 43 of the movable plate-like body 63 is not limited to two or three, and a plurality of cutting blades 43 can be provided, and when a moving mode in the linear direction is adopted as a strip-like configuration extending in the x direction as shown in FIG. For example, it is possible to perform the same operation as described above by rotating in one direction or reciprocating as an arc or ring.

  Further, in the example described with reference to FIGS. 11 and 12, the cutting blade 43 for obtaining the lithium metal cutting body 22 is the case where the cutting body 22 is moved and transported to the other part. Means such as those described in FIGS. 8 and 9 may be provided separately.

  For example, the battery having the configuration shown in FIG. 1 obtained in this way is configured with the electrode lithium metal 4 placed on the negative electrode sealing lid 2 with a stable shape, size, and adhesiveness. A battery having characteristics can be obtained with high yield.

  As described above, by forming the lithium Li metal rod-like body 21 into a prismatic shape having a substantially regular square cross section, it is difficult to be deformed and the position of rotation about the axis can be easily set. That is, since Li is relatively soft and easily plastically deformed, when it is formed into a cylindrical shape, the problem of deformation at the time of handling, for example, a cutting device or a holding device 41 for transporting, cutting, and the like during a cutting operation Further, it is possible to improve the complexity of position setting due to the peripheral surface being a cylindrical surface and no directionality.

  Further, a cut body 22 obtained by cutting from the lithium metal rod-like body 21 has a prismatic shape, and this is placed on the sealing lid body 2 and formed by pressure bonding with a punch 37 having a bowl-shaped recess 36 first. By taking the procedure of performing the first molding and then performing the second molding using the flat plate-shaped punch 38, the shape thereof can be made into a clean circle corresponding to the ring shape of the recess 36.

  In this case, the volume of the cut body 22 is, of course, selected in accordance with the size of the negative lithium metal 4 finally obtained. The first molding excellent in the shape corresponding to the concave portion 36 is made by selecting a volume equal to or less than the volume of, for example, about 10% larger than that. Therefore, when pressing with a flat plate punch in the next step, the ring has an excellent circular shape, has the exact dimension and shape, and has excellent adhesion to the negative electrode sealing lid 2 over the entire area. The negative electrode lithium metal 4 can be formed and arranged with good properties.

  In this molding, when the length L of the cut body 22 is 1 to 2.5 times the side Ls of the square section of the lithium metal rod-shaped body 21 (Ls ≦ L ≦ 2.5Ls), the first described above. And by the punch at the time of 2nd shaping | molding, ie, rolling, it was able to contact | adhere to the negative electrode sealing cover body 2 uniformly and circularly.

  That is, when L <Ls or L> 2.5Ls, the obtained negative electrode lithium metal was inferior in roundness or had a problem in adhesion.

  In addition, since lithium is rich in flexibility and highly reactive, it is easy to react with the cutting blade during the cutting, and inconvenience such as deformation of the rod-shaped body 21 and the cutting body 22 due to the adhesion of lithium metal. However, as in the present invention, the above-described deformation can be reduced by simply pressing the stretched thin wire 23 or by cutting the pair of blades 24 and 25 between them. In particular, when the wire 23 is used, the adhesion of lithium to this is effectively avoided, and even if the lithium adheres, the adhering lithium is sequentially eliminated at the time of pressing and cutting, so the so-called sharpness is reduced due to the lithium adhesion. Is avoided.

  Furthermore, the peelability can be measured by applying an electrolytic solution or its non-aqueous solvent in punching from a lithium metal plate, rolling by punching, or the like, and the adhesion can be improved.

According to the method for manufacturing a coin-type lithium battery according to the present embodiment, by cutting and using the metal lithium rod 21 in the longitudinal direction, waste of material is completely eliminated, and resource saving and cost reduction are achieved. be able to.
In addition, the rod-like body 21 is formed into a prismatic shape excellent in rod-like strength and position setting, and in addition to the prismatic shape as described above, the punch 37 having the bowl-shaped recess 36 is used for forming the circular wheel cage. After forming, plate-shaped forming can improve the accuracy of the shape dimension and make the adhesion uniform.

  Further, when the lithium metal cut body 22 is disposed on the negative electrode sealing lid body 2, the latest cut surface, that is, the surface on which no oxide film is formed is directed to the bottom surface 2 </ b> B of the lid body 2, thereby the lid body 2 of the cut body 22. Temporary crimping by pressure bonding, and electrical connection between the negative electrode lithium electrode 4 and the negative electrode sealing lid 2 in the finished battery can be performed with low resistance.

  Further, in the punching and rolling punching of lithium metal, even when a punch made of plastic is used by applying a nonaqueous solvent of an electrolytic solution to the punch or punched lithium metal plate 10 or lithium metal cut body 22. In other words, since it can act as a mold release agent, the desired punching can be performed satisfactorily by allowing the peeling to be performed satisfactorily, causing deformation of the lithium metal or the negative electrode sealing lid. It is possible to avoid the occurrence of defective products and the inability to use the punch due to the adhesion of lithium.

  And since this mold release agent is a composition of the electrolyte solution of the battery which comprises finally, the problem in the characteristic by apply | coating and using this does not arise.

  In this manner, in this embodiment, a highly reliable battery can be stably obtained with a high yield.

It is a side view which makes the cross section the half part of the battery which is going to be obtained by the method of this invention. It is a perspective view of the lithium metal rod-shaped body used with the method of this invention. It is a perspective view of an example of a cutting body. It is a perspective view of an example of the cutting device in the method of the present invention. It is a perspective view of an example of the cutting device in the method of the present invention. It is sectional drawing of each process of an example of this invention method. It is sectional drawing of each process of an example of this invention method. It is a perspective view of an example of the holding jig used for the method of the present invention. It is a perspective view of an example of the holding jig used for the method of the present invention. It is explanatory drawing of this invention method. It is a perspective view of an example of the cutting device used for the method of the present invention. It is a top view of an example of the cutting device used for a method of the present invention, and a sectional view on a BB line. It is a perspective view of 1 process of an example of this invention method. It is explanatory drawing of the conventional method. It is a perspective view of a negative electrode sealing cover body.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Battery case, 2 ... Negative electrode sealing cover body, 4 ... Negative electrode lithium metal, 21 ... Lithium metal rod-shaped body, 22 ... Cutting body, 23 ... Stretched thin wire, 24 ... Blade, 25 ... Blade

Claims (2)

In the method of manufacturing a coin-type lithium battery in which a lithium metal punched body punched from a lithium metal plate by a punching punch is disposed in a negative electrode sealing lid body,
A nonaqueous solvent used in a coin-type lithium battery finally obtained as a release agent , or an electrolyte containing an electrolyte in a nonaqueous solvent is applied to at least one of the punch or the lithium metal plate surface. A method for producing a coin-type lithium battery, comprising: The lithium metal body is cut into a predetermined dimension using a stretched thin wire or a sandwiched body,
Cut surface of the lithium metal body is placed in contact with the Fukyokufu palate body bottom punch rolling or molding the lithium metal, or at least one of the contact surface between the punch of the lithium metal body, away A coin-type lithium which is rolled or molded by the above punch in a state where a non-aqueous solvent finally used as a mold agent is used in a coin-type lithium battery, or an electrolyte containing an electrolyte is applied to the non-aqueous solvent A battery manufacturing method.

Images